java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-07 21:31:53,140 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-07 21:31:53,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-07 21:31:53,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-07 21:31:53,201 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-07 21:31:53,228 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-07 21:31:53,229 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-07 21:31:53,229 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-07 21:31:53,230 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-07 21:31:53,230 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-07 21:31:53,230 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-07 21:31:53,230 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-07 21:31:53,230 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-07 21:31:53,231 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-07 21:31:53,231 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-07 21:31:53,231 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-07 21:31:53,231 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-07 21:31:53,231 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-07 21:31:53,232 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-07 21:31:53,233 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-07 21:31:53,233 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-07 21:31:53,233 INFO L133 SettingsManager]: * Use SBE=true [2019-01-07 21:31:53,233 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-07 21:31:53,234 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-07 21:31:53,234 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-07 21:31:53,234 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-07 21:31:53,234 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-07 21:31:53,234 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-07 21:31:53,236 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-07 21:31:53,236 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-07 21:31:53,237 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-07 21:31:53,237 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-07 21:31:53,237 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-07 21:31:53,237 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-07 21:31:53,237 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-07 21:31:53,238 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-07 21:31:53,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-07 21:31:53,238 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-07 21:31:53,238 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-07 21:31:53,238 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-07 21:31:53,239 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-07 21:31:53,239 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-07 21:31:53,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-07 21:31:53,239 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-07 21:31:53,239 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-07 21:31:53,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-07 21:31:53,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-07 21:31:53,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-07 21:31:53,298 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-07 21:31:53,298 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-07 21:31:53,299 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl [2019-01-07 21:31:53,299 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-limited.bpl' [2019-01-07 21:31:53,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-07 21:31:53,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-07 21:31:53,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-07 21:31:53,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-07 21:31:53,346 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-07 21:31:53,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-07 21:31:53,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-07 21:31:53,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-07 21:31:53,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-07 21:31:53,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... [2019-01-07 21:31:53,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-07 21:31:53,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-07 21:31:53,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-07 21:31:53,442 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-07 21:31:53,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-07 21:31:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-07 21:31:53,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-07 21:31:54,055 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-07 21:31:54,056 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-07 21:31:54,057 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 09:31:54 BoogieIcfgContainer [2019-01-07 21:31:54,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-07 21:31:54,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-07 21:31:54,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-07 21:31:54,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-07 21:31:54,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 09:31:53" (1/2) ... [2019-01-07 21:31:54,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9a9d5d and model type speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 09:31:54, skipping insertion in model container [2019-01-07 21:31:54,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 09:31:54" (2/2) ... [2019-01-07 21:31:54,066 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-limited.bpl [2019-01-07 21:31:54,077 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-07 21:31:54,091 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-07 21:31:54,109 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-07 21:31:54,151 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-07 21:31:54,151 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-07 21:31:54,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-07 21:31:54,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-07 21:31:54,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-07 21:31:54,152 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-07 21:31:54,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-07 21:31:54,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-07 21:31:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-07 21:31:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-07 21:31:54,188 INFO L394 BasicCegarLoop]: Found error trace [2019-01-07 21:31:54,189 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-07 21:31:54,192 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-07 21:31:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 21:31:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-07 21:31:54,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-07 21:31:54,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:31:54,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 21:31:54,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:31:54,259 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-07 21:31:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 21:31:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:31:54,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-07 21:31:54,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-07 21:31:54,427 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-07 21:31:54,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-07 21:31:54,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-07 21:31:54,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-07 21:31:54,449 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-07 21:31:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-07 21:31:54,745 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-07 21:31:54,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-07 21:31:54,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-07 21:31:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-07 21:31:54,762 INFO L225 Difference]: With dead ends: 45 [2019-01-07 21:31:54,762 INFO L226 Difference]: Without dead ends: 40 [2019-01-07 21:31:54,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-07 21:31:54,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-07 21:31:54,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-07 21:31:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-07 21:31:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-07 21:31:54,810 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-07 21:31:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-07 21:31:54,811 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-07 21:31:54,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-07 21:31:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-07 21:31:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-07 21:31:54,812 INFO L394 BasicCegarLoop]: Found error trace [2019-01-07 21:31:54,812 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-07 21:31:54,813 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-07 21:31:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 21:31:54,814 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-07 21:31:54,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-07 21:31:54,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:31:54,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 21:31:54,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:31:54,816 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-07 21:31:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 21:31:55,013 WARN L181 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-01-07 21:31:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:31:55,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-07 21:31:55,048 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-07 21:31:55,049 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-07 21:31:55,051 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-07 21:31:55,092 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-07 21:31:55,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-07 21:31:55,196 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-07 21:31:55,198 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 3. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-07 21:31:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 21:31:55,207 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-07 21:31:55,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-07 21:31:55,207 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-07 21:31:55,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 21:31:55,223 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-07 21:31:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 21:31:55,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-07 21:31:55,705 WARN L181 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-01-07 21:31:55,731 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-07 21:31:55,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,821 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-07 21:31:55,840 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,841 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,843 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-07 21:31:55,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,863 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,866 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,868 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-07 21:31:55,885 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,887 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,891 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,893 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,895 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-07 21:31:55,916 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,921 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,933 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-07 21:31:55,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,978 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,981 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,983 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:55,992 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-07 21:31:56,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,037 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,041 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,049 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,051 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,054 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-07 21:31:56,108 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,133 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,152 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,171 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,191 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,197 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,198 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,198 INFO L303 Elim1Store]: Index analysis took 135 ms [2019-01-07 21:31:56,202 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-07 21:31:56,256 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,277 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,279 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,282 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,284 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,289 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:56,295 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 231 [2019-01-07 21:31:56,298 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-07 21:31:56,908 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,142 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,258 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,326 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,390 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,448 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,498 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,552 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,601 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:57,734 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,736 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,738 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-07 21:31:57,755 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-07 21:31:57,849 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,870 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,873 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:57,879 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 98 [2019-01-07 21:31:57,899 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 87 [2019-01-07 21:31:58,075 WARN L181 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-01-07 21:31:58,095 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,096 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,097 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,098 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,100 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,101 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,103 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,105 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,110 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 121 [2019-01-07 21:31:58,231 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-01-07 21:31:58,269 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,270 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,271 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,272 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,273 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,275 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,278 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,279 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,281 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,286 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 137 [2019-01-07 21:31:58,316 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 134 [2019-01-07 21:31:58,507 WARN L181 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-01-07 21:31:58,559 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,602 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,641 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,644 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,645 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,645 INFO L303 Elim1Store]: Index analysis took 132 ms [2019-01-07 21:31:58,647 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-07 21:31:58,649 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,669 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,685 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,696 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,714 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,725 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,729 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,732 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:31:58,784 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-07 21:31:58,785 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:155, output treesize:78 [2019-01-07 21:31:58,911 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,913 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,914 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,917 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,919 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,921 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,924 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,939 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,940 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,942 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,944 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,945 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,946 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,947 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,949 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,954 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,955 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,956 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,959 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,961 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,962 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,963 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,965 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,967 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,970 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,971 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,987 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,992 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,994 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,998 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:31:58,998 INFO L303 Elim1Store]: Index analysis took 112 ms [2019-01-07 21:31:59,001 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 231 [2019-01-07 21:31:59,004 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-07 21:31:59,421 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2019-01-07 21:31:59,421 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:88, output treesize:78 [2019-01-07 21:32:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:32:02,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-07 21:32:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:32:02,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-07 21:32:02,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-07 21:32:02,298 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-07 21:32:02,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-07 21:32:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-07 21:32:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-07 21:32:02,300 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-07 21:32:23,872 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-07 21:32:23,874 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-01-07 21:32:23,878 INFO L168 Benchmark]: Toolchain (without parser) took 30534.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 686.8 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -315.2 MB). Peak memory consumption was 371.6 MB. Max. memory is 7.1 GB. [2019-01-07 21:32:23,880 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-07 21:32:23,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-07 21:32:23,881 INFO L168 Benchmark]: Boogie Preprocessor took 30.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-07 21:32:23,881 INFO L168 Benchmark]: RCFGBuilder took 615.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-01-07 21:32:23,882 INFO L168 Benchmark]: TraceAbstraction took 29818.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 686.8 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -336.3 MB). Peak memory consumption was 350.5 MB. Max. memory is 7.1 GB. [2019-01-07 21:32:23,887 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 615.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29818.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 686.8 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -336.3 MB). Peak memory consumption was 350.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...